/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package observer;

import java.util.ArrayList;
import java.util.List;

/**
 * @author shadow
 * @Date 2016年8月12日下午7:50:13
 * @Fun 具体被观察者目标
 **/
public class UpdateWatchedSubject implements IWathedSubject {

    private List<IWatcher> list;

    public UpdateWatchedSubject() {
        // TODO Auto-generated constructor stub
        this.list = new ArrayList<>();
    }

    @Override
    public void add(IWatcher watcher) {
        // TODO Auto-generated method stub
        this.list.add(watcher);
    }

    @Override
    public void remove(IWatcher watcher) {
        // TODO Auto-generated method stub
        this.list.add(watcher);
    }

    @Override
    public void notifyWatchers() {
        // TODO Auto-generated method stub
        for (IWatcher watcher : list) {
            watcher.update();
        }
    }

    @Override
    public void update() {
        // TODO Auto-generated method stub
        System.out.println("目标更新中....");
        notifyWatchers();
    }

}
